What is the technical word for the function ~ExamAdept() defined in the following program?

#include<iostream.h> 
class ExamAdept
{
    int x, y; 
    public:
    ExamAdept(int xx = 10, int yy = 20 )
    {
        x = xx; 
        y = yy;
    }
    void Display()
    {
        cout<< x << " " << y << endl;
    } 
    ~ExamAdept()
    { } 
};
int main()
{
    ExamAdept objBix; 
    objBix.Display(); 
    return 0;
}

What will be the output of the following program?

#include<iostream.h> 
class ExamAdept
{
    int x, y; 
    public:
    ExamAdept(int xx)
    {
        x = ++xx;
    } 
    ~ExamAdept()
    {
        cout<< x - 1 << " ";
    }
    void Display()
    {
        cout<< --x + 1 << " ";
    } 
};
int main()
{
    ExamAdept objBix(5);
    objBix.Display();
    int *p = (int*) &objBix;
    *p = 40;
    objBix.Display();
    return 0; 
}

What will be the output of the following program?

#include<iostream.h>
class BixBase
{   
    public:
    BixBase()
    {
        cout<< "Base OK. "; 
    }
};
class BixDerived: public BixBase
{
    public:
    BixDerived()
    { 
        cout<< "Derived OK. "; 
    }
    ~BixDerived()
    { 
        cout<< "Derived DEL. "; 
    }
};
int main()
{
    BixBase    objB;
    BixDerived objD;
    objD.~BixDerived();
    return 0;
}

Which of the following constructor is used in the program given below?

#include<iostream.h> 
class ExamAdept
{
    int x, y; 
    public:
    ExamAdept(int xx = 10, int yy = 20 )
    {
        x = xx; 
        y = yy;
    }
    void Display()
    {
        cout<< x << " " << y << endl;
    } 
    ~ExamAdept()
    { } 
};
int main()
{
    ExamAdept objBix; 
    objBix.Display(); 
    return 0;
}

Which of the following statement is correct about the program given below?

#include<iostream.h> 
class ExamAdept
{
    int *p; 
    public:
    ExamAdept(int xx, char ch)
    {
        p  = new int(); 
        *p = xx + int(ch); 
        cout<< *p;
    }
    ~ExamAdept() 
    {
        delete p;
    }
};
int main()
{
    ExamAdept objBix(10, 'B'); 
    return 0;
}